<template>
    <div>
        <!-- 面包屑导航区 -->
       <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据列表</el-breadcrumb-item>
       </el-breadcrumb>

       <el-card>
          <!--2. 为 ECharts 准备一个定义了宽高的 DOM -->
          <div id="main" style="width: 750px;height:400px;"></div>
          
       </el-card>
    </div>
</template>



<script>
// 1.导入 echarts
import * as echarts from 'echarts'
import _ from 'lodash'
export default {
    data(){
        return{
            // 需要合并的数据
            options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
            }
        }
    },
    created(){},
    // 此时，页面上的元素已经被渲染完毕了
    async mounted(){
        // 3.基于准备好的dom，初始化echarts实例
          var myChart = echarts.init(document.getElementById('main'))
        
          const{data:res} = await this.$http.get('reports/type/1')
          if (res.meta.status !== 200){
              return this.$message.error('获取折线图数据失败！')
          }

        // 4. 指定图表的配置项和数据
        const result = _.merge(res.data,this.options)

        // 5.使用刚指定的配置项和数据显示图表。
         myChart.setOption(result)
    },
    methods:{}
    
}
</script>



<style lang="less" scoped>

</style>